DE4444819A1 - Lubricating oil pump for IC engine - Google Patents

Lubricating oil pump for IC engine

Info

Publication number
DE4444819A1
DE4444819A1 DE19944444819 DE4444819A DE4444819A1 DE 4444819 A1 DE4444819 A1 DE 4444819A1 DE 19944444819 DE19944444819 DE 19944444819 DE 4444819 A DE4444819 A DE 4444819A DE 4444819 A1 DE4444819 A1 DE 4444819A1
Authority
DE
Germany
Prior art keywords
lubricating oil
oil pump
housing
spring
spring element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19944444819
Other languages
German (de)
Inventor
Andreas Luedtke
Reinhard Joos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE19944444819 priority Critical patent/DE4444819A1/en
Publication of DE4444819A1 publication Critical patent/DE4444819A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C14/26Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/16Controlling lubricant pressure or quantity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N13/00Lubricating-pumps
    • F16N13/20Rotary pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N2270/00Controlling
    • F16N2270/60Pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The pressure regulating valve (7) in the housing (5) is formed by a regulating piston (7b) displaceable in the axial direction (3) of the oil pump (2) and loaded by a torsion-biased leg spring (7a). The axis of the spring windings is at right angles to the axial direction of the pump.The leg spring is supported by its two legs (11a,11b) on the housing on one side and on the piston on the other. The piston is guided in a circular recess (12) of one of the housing parts (5a).

Description

Die Erfindung betrifft eine Schmierölpumpe einer Brenn­ kraftmaschine, insbesondere eine Innenzahnradpumpe, mit einem im Gehäuse angeordneten Druckregelventil, das als ein von einem Federelement belasteter, einen Überström­ querschnitt abdeckender oder freigebender Abregelkolben ausgebildet ist. Zum Stand der Technik wird beispielshal­ ber auf die EP 0 315 878 A2 verwiesen, wenngleich dort das mit einem Schraubenfederelement versehene Druckregel­ ventil nicht im Gehäuse der Innenzahnradpumpe angeordnet ist. Gleiches gilt bezüglich der aus der GB-PS 594 787 bekannten Schmierölpumpe einer Brennkraftmaschine.The invention relates to a lubricating oil pump of a burner Engine, in particular an internal gear pump, with a pressure control valve arranged in the housing, which as an overflow loaded by a spring element regulating piston covering or releasing cross section is trained. The prior art is exemplified referred to EP 0 315 878 A2, although there the pressure rule provided with a coil spring element valve is not arranged in the housing of the internal gear pump is. The same applies to that from GB-PS 594 787 known lubricating oil pump of an internal combustion engine.

Um eine kompakte Bauweise zu erzielen, wird angestrebt, das Druckregelventil in das Gehäuse der Schmierölpumpe zu integrieren. Dabei benötigt jedoch die aus dem Stand der Technik bekannte Schraubenfeder als Federelement des Druckregelventiles einen relativ großen axialen Bauraum, da sie eine große Zahl aktiver Windungen besitzt. Maßnah­ men aufzuzeigen, mit Hilfe derer eine Schmierölpumpe nach dem Oberbegriff des Anspruchs 1 noch kompakter ausgebil­ det werden kann, ist Aufgabe der vorliegenden Erfindung.In order to achieve a compact design, the aim is the pressure control valve into the housing of the lubricating oil pump integrate. However, this requires the state of the art Technology known coil spring as a spring element of Pressure control valve has a relatively large axial installation space, because it has a large number of active turns. Measure men with the help of which a lubricating oil pump the preamble of claim 1 trained even more compact det can be the object of the present invention.

Zur Lösung dieser Aufgabe sind zusammenwirkend die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale vorgesehen. Vorteilhafte Aus- und Weiterbildungen sind im Unteranspruch fakultativ aufgelistet.To solve this task, the are working together characterizing part of claim 1 specified features  intended. Advantageous training and further education are in Optional subclaim listed.

Näher erläutert wird die Erfindung anhand eines bevorzug­ ten Ausführungsbeispieles, dabei zeigt Fig. 1 einen Halb- Axialschnitt, sowie Fig. 2 den Schnitt A aus Fig. 1.The invention is explained in more detail with reference to a preferred exemplary embodiment, FIG. 1 showing a semi-axial section and FIG. 2 section A from FIG. 1.

Mit der Bezugsziffer 1 ist eine Brennkraftmaschinen-Welle bezeichnet, auf der eine als Innenzahnradpumpe ausgebil­ dete Schmierölpumpe 2 angeordnet ist. Die Achse 3 der Brennkraftmaschinen-Welle 1 stellt dabei gleichzeitig die Achsrichtung 3 der Schmierölpumpe 2 dar.Reference numeral 1 denotes an internal combustion engine shaft, on which a lubricating oil pump 2 configured as an internal gear pump is arranged. The axis 3 of the internal combustion engine shaft 1 simultaneously represents the axial direction 3 of the lubricating oil pump 2 .

Im einzelnen besteht die als Innenzahnradpumpe ausgebil­ dete Schmierölpumpe 2 wie üblich aus zwei Laufrädern 4a, 4b, die innerhalb eines zwei Gehäuseteile 5a, 5b aufwei­ senden Gehäuses 5 angeordnet sind und dabei wie üblich eine Saugseite 6a sowie eine Druckseite 6b definieren. Ferner ist im Gehäuse 5 ein Druckregelventil 7 vorgese­ hen, das als ein von einem Federelement 7a belasteter, einen Überströmquerschnitt 8 im Gehäuseteil 5a abdecken­ der oder freigebender Abregelkolben 7b ausgebildet ist. Befindet sich der Abregelkolben 7b in der in Fig. 1 ge­ zeigten Position, so ist der die Druckseite 6b mit der Saugseite 6a verbindende Überströmquerschnitt 8 ver­ schlossen, wird hingegen der Abregelkolben 7b in Achs­ richtung 3 aufgrund hohen Öl-Förderdruckes nach rechts verschoben, so wird zumindest ein Teilbereich oder auch der vollständige Überströmquerschnitt 8 freigegeben, wo­ durch ein Teilstrom des geförderten Schmieröles von der Druckseite 6b weggenommen wird.Specifically, the ausgebil Dete lubricating oil pump 2 as an internal gear pump, as usual, consists of two impellers 4 a, 4 b, which are arranged within a two housing parts 5 a, 5 b, housing 5 and, as usual, a suction side 6 a and a pressure side 6 b define. Furthermore, a pressure control valve 7 is provided in the housing 5 , which is designed as a spring element 7 a that covers an overflow cross section 8 in the housing part 5 a or that is designed to release or regulate the control piston 7 b. Is the shut-off piston 7 b in the ge shown in Fig. 1 position, the pressure side 6 b with the suction side 6 a connecting overflow cross-section 8 ver closed, however, the shut-off piston 7 b in the axial direction 3 due to high oil delivery pressure after shifted to the right, a portion or the complete overflow cross-section 8 is released, at least where it is removed b through a partial flow of the pumped lubricating oil from the pressure side. 6

Beim Federelement 7a handelt es sich um eine torsionsbe­ lastete Schenkelfeder, wobei die Achse 9 der Federwindun­ gen im wesentlichen rechtwinkelig zur Achsrichtung 3 der Schmierölpumpe 2 liegt. Mit dieser Gestaltung ergibt sich eine äußerst kompakte, raumsparende Bauweise, da die längs der Achse 9 verlaufenden Federwindungen des Feder­ elementes 7a keinen zusätzlichen Bauraum benötigen, son­ dern vollständig innerhalb des relativ schmalen, da le­ diglich die Laufräder 4a, 4b einschließenden Gehäuses 5 liegen können.The spring element 7 a is a torsion-loaded leg spring, the axis 9 of the Federwindun gene is substantially perpendicular to the axial direction 3 of the lubricating oil pump 2 . This design results in an extremely compact, space-saving design, since the spring windings running along the axis 9 of the spring element 7 a do not require any additional installation space, but are completely within the relatively narrow, since le diglich the impellers 4 a, 4 b enclosing housing 5 can lie.

Im Detail ist das als Schenkelfeder ausgebildete Feder­ element 7a in einer hinsichtlich seiner Abmessungen ange­ paßten Aussparung 10 im Gehäuseteil 5a gelagert, wobei diese Aussparung 10 vom anderen Gehäuseteil 5b abgedich­ tet wird und wobei sich die Schenkelfeder mit ihrem ersten Schenkel 11a am Gehäuseteil 5a mit ihrem zweiten Schenkel 11b am Abregelkolben 7b abstützt. Wie ersicht­ lich ist dieser Abregelkolben 7b dabei in einer kreisför­ migen Aussparung 12 des Gehäuseteiles 5a geführt und liegt in der den Überströmquerschnitt 8 abdeckenden Posi­ tion an den Laufrädern 4a, 4b der Schmierölpumpe 2 an. Mit all diesen Merkmalen erhält man eine äußerst kompakt und einfach bauende und gleichzeitig insbesondere auf­ grund der geringen Teilezahl funktional zuverlässige Schmierölpumpe, insbesondere Innenzahnradpumpe einer Brennkraftmaschine.In detail, the spring element designed as a leg spring 7 a is mounted in a recess 10 with regard to its dimensions in the housing part 5 a, this recess 10 being sealed from the other housing part 5 b and the leg spring with its first leg 11 a Housing part 5 a is supported with its second leg 11 b on the regulating piston 7 b. As can be seen, this regulating piston 7 b is guided in a circular recess 12 of the housing part 5 a and lies in the position covering the overflow cross section 8 on the impellers 4 a, 4 b of the lubricating oil pump 2 . With all of these features, one obtains an extremely compact and simple-to-build lubricating oil pump, which at the same time is functionally reliable, in particular due to the small number of parts, in particular an internal gear pump of an internal combustion engine.

Claims (2)

1. Schmierölpumpe einer Brennkraftmaschine, insbeson­ dere Innenzahnradpumpe, mit einem im Gehäuse (5) an­ geordneten Druckregelventil (7), das als ein von einem Federelement (7a) belasteter, einen Überström­ querschnitt (8) abdeckender oder freigebender Abre­ gelkolben (7b) ausgebildet ist, gekennzeichnet durch folgende Merkmale:
  • - der Abregelkolben (7b) ist in Achsrichtung (3) der Schmierölpumpe (2) verschiebbar
  • - das Federelement (7a) ist eine torsionsbelastete Schenkelfeder
  • - die Achse (9) der Federwindungen liegt im wesentli­ chen rechtwinkelig zur Achsrichtung (3) der Schmierölpumpe (2)
  • - die Schenkelfeder (Federelement 7a) stützt sich mit ihren beiden Schenkeln (11a, 11b) einerseits am Ge­ häuse (5) und andererseits am Abregelkolben (7b) ab.
1. lubricating oil pump of an internal combustion engine, in particular an internal gear pump, comprising a housing (5) to parent pressure regulating valve (7) which gelkolben as a covering or give-releasing of a spring element (7 a) loaded, an overflow cross section (8) Abre (7 b ) is characterized by the following features:
  • - The regulating piston ( 7 b) is displaceable in the axial direction ( 3 ) of the lubricating oil pump ( 2 )
  • - The spring element ( 7 a) is a torsion spring leg
  • - The axis ( 9 ) of the spring windings lies in wesentli chen perpendicular to the axial direction ( 3 ) of the lubricating oil pump ( 2 )
  • - The leg spring (spring element 7 a) is supported with its two legs ( 11 a, 11 b) on the one hand on the Ge housing ( 5 ) and on the other hand on the regulating piston ( 7 b).
2. Schmierölpumpe nach Anspruch 1, gekennzeichnet durch zumindest eines der folgenden Merkmale:
  • - der Abregelkolben (7b) ist in einer kreisförmigen Aussparung (12) des einen Gehäuseteiles (5a) geführt
  • - in der den im Gehäuse (5) vorgesehenen Überström­ querschnitt (8) abdeckenden Position liegt der Abre­ gelkolben (7b) an den Laufrädern (4a, 4b) der Schmierölpumpe (2) an
  • - die Schenkelfeder (Federelement 7a) ist in einer hinsichtlich der Abmessungen angepaßten Aussparung (10) in einem Gehäuseteil (5a) gelagert, die vom an­ deren Gehäuseteil (5b) abgedeckt wird.
2. Lubricating oil pump according to claim 1, characterized by at least one of the following features:
  • - The regulating piston ( 7 b) is guided in a circular recess ( 12 ) of one housing part ( 5 a)
  • - In the in the housing ( 5 ) provided overflow cross-section ( 8 ) covering position Abre gelkolben ( 7 b) on the impellers ( 4 a, 4 b) of the lubricating oil pump ( 2 )
  • - The leg spring (spring element 7 a) is mounted in a recess ( 10 ) which is adapted to the dimensions in a housing part ( 5 a) which is covered by the other housing part ( 5 b).
DE19944444819 1994-12-15 1994-12-15 Lubricating oil pump for IC engine Withdrawn DE4444819A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944444819 DE4444819A1 (en) 1994-12-15 1994-12-15 Lubricating oil pump for IC engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944444819 DE4444819A1 (en) 1994-12-15 1994-12-15 Lubricating oil pump for IC engine

Publications (1)

Publication Number Publication Date
DE4444819A1 true DE4444819A1 (en) 1996-06-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944444819 Withdrawn DE4444819A1 (en) 1994-12-15 1994-12-15 Lubricating oil pump for IC engine

Country Status (1)

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DE (1) DE4444819A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646359A1 (en) * 1996-11-09 1998-05-14 Josef Bachmann Lubricating oil pump controlled by volumetric degree of effect
EP0822334A3 (en) * 1996-08-02 1998-11-25 Neudecker & Jolitz GmbH & Co. Gear pump
WO2003044370A1 (en) * 2001-11-20 2003-05-30 Lg Electronics Inc. Vane supporting apparatus for hermetic compressor
WO2003058071A1 (en) * 2002-01-12 2003-07-17 Dieter Voigt Device for pressure regulation of hydraulic pumps
US7674095B2 (en) 2000-12-12 2010-03-09 Borgwarner Inc. Variable displacement vane pump with variable target regulator
US7726948B2 (en) 2002-04-03 2010-06-01 Slw Automotive Inc. Hydraulic pump with variable flow and variable pressure and electric control

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268806A (en) * 1939-07-13 1942-01-06 Curtis Pump Co By-pass valve for aircraft fuel pumps
US3102488A (en) * 1960-12-12 1963-09-03 Thompson Ramo Wooldridge Inc Pressure control device
DE1241191B (en) * 1964-01-31 1967-05-24 Volkswagenwerk Ag Arrangement of the pressure relief valve of a gear pump
FR2393956A2 (en) * 1977-06-07 1979-01-05 Hydro Meca Gear pump for power assisted steering system - has delivery valve with sprung piston to control volume of oil flow
DE3333647C2 (en) * 1982-09-21 1986-10-30 Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden Lubricant pump for generating pressure in an internal combustion engine lubricated by pressure circulation
EP0301886A2 (en) * 1987-07-29 1989-02-01 HYDRECO, INC. (a Delaware corporation) Variable discharge gear pump with energy recovery
US4971528A (en) * 1989-03-06 1990-11-20 Stanadyne Automotive Corp. Lube oil pump with relief valve
EP0517014A1 (en) * 1991-06-07 1992-12-09 Schwäbische Hüttenwerke Gesellschaft mit beschränkter Haftung Lubrication gear pump for internal combustion engines, especially for vehicles
DE4219538A1 (en) * 1991-06-28 1993-01-07 Volkswagen Ag IC engine oil pump - design allows for drive to be taken from crankshaft, gear or chain wheel
DE4302610A1 (en) * 1993-01-30 1994-08-04 Glyco Metall Werke Process for regulating the pump output of lubricant pumps and lubricant pump therefor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268806A (en) * 1939-07-13 1942-01-06 Curtis Pump Co By-pass valve for aircraft fuel pumps
US3102488A (en) * 1960-12-12 1963-09-03 Thompson Ramo Wooldridge Inc Pressure control device
DE1241191B (en) * 1964-01-31 1967-05-24 Volkswagenwerk Ag Arrangement of the pressure relief valve of a gear pump
FR2393956A2 (en) * 1977-06-07 1979-01-05 Hydro Meca Gear pump for power assisted steering system - has delivery valve with sprung piston to control volume of oil flow
DE3333647C2 (en) * 1982-09-21 1986-10-30 Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden Lubricant pump for generating pressure in an internal combustion engine lubricated by pressure circulation
EP0301886A2 (en) * 1987-07-29 1989-02-01 HYDRECO, INC. (a Delaware corporation) Variable discharge gear pump with energy recovery
US4971528A (en) * 1989-03-06 1990-11-20 Stanadyne Automotive Corp. Lube oil pump with relief valve
EP0517014A1 (en) * 1991-06-07 1992-12-09 Schwäbische Hüttenwerke Gesellschaft mit beschränkter Haftung Lubrication gear pump for internal combustion engines, especially for vehicles
DE4219538A1 (en) * 1991-06-28 1993-01-07 Volkswagen Ag IC engine oil pump - design allows for drive to be taken from crankshaft, gear or chain wheel
DE4302610A1 (en) * 1993-01-30 1994-08-04 Glyco Metall Werke Process for regulating the pump output of lubricant pumps and lubricant pump therefor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822334A3 (en) * 1996-08-02 1998-11-25 Neudecker & Jolitz GmbH & Co. Gear pump
DE19646359A1 (en) * 1996-11-09 1998-05-14 Josef Bachmann Lubricating oil pump controlled by volumetric degree of effect
DE19646359C2 (en) * 1996-11-09 2001-12-06 Gkn Sinter Metals Gmbh Oil pump with a gear rotor set
US7674095B2 (en) 2000-12-12 2010-03-09 Borgwarner Inc. Variable displacement vane pump with variable target regulator
WO2003044370A1 (en) * 2001-11-20 2003-05-30 Lg Electronics Inc. Vane supporting apparatus for hermetic compressor
WO2003058071A1 (en) * 2002-01-12 2003-07-17 Dieter Voigt Device for pressure regulation of hydraulic pumps
US7726948B2 (en) 2002-04-03 2010-06-01 Slw Automotive Inc. Hydraulic pump with variable flow and variable pressure and electric control

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